Maintaining windows – wood, steel or aluminum? Concerned about abrasive cleaners? Ceramic tile? Moisture problems? The National Park Service has preservation briefs to help on all these topics — 44 in all — available at your fingertips online. While these briefs appear to be intended for historic preservation pro’s — and while I’m not sure the NPS would yet classify our little pieces of the American dream as “historic” — the reports certainly appear to be informative reading for renovation geeks who want to know as much as they can about what they may be dealing with. Remember, I always advise to consult with pro’s when it comes to environmental and safety issues — renovate safe. Here is the link to all the NPS Technical Service Briefs. You can read them online — or order them in print, for free.